Roll paper cutter



March 3, 1942. N. B. CURRIER 2,274,973

ROLL PAPER CUTTER Original Filed Aug. 2, 1940 //1 1/r0@ /(5/4 5. Canefins/a:

Patented Mar. 3, 1942 'ROLL PAPER CUTTER Neil B. Currier, Los Angeles,(JaliL, assignor of I one-half to Lynn H. McClintock and one-half toFlorence L. McClintock, both of Los Angeles,

Calif.

Original application AugustZ, 1940, Serial No. 349,913. Divided and thisapplication February 26, 1941, Serial No. 380,638 1 5 Claims.

My invention relates to a roll paper cutter and the subject matterherein illustrated and described is a division of my copendingapplication for U. S. Letters Patent on roll paper cutter filed August2, 1940, Serial No. 349,913.

The principal objects of my invention are, to generally improve upon andsimplify the construction of the existing forms of paper cutters.particularly those used for cutting wrapping paper, light weightcardboard,-corrugated wrapping paper, light weight leather, or the like,and further, to provide a simple, strong, durable and efficient cutter,that is mounted for sliding movement upon a cutter bar over which theweb of paper passes and said cutter carrying a pair of oppositelyarranged blades so as to enable the paper or other material to besevered as the cutter is moved in either direction upon the cutter baror supporting rail.

A further object of my invention is, to mount the sliding cutter uponthe cutterbar or rail so that it will travel thereon with minimumfriction, and further, to construct the body of the cutter between theblades so that very little, if any, resistance will be offered to thecutter body by the edges of the severed material during the cuttingfunction.

With the foregoing and other objects in view, my invention consists incertain novel features of construction and arrangement of parts that :34

will be hereinafter more fully described and claimed and illustrated inthe accompanying drawing in which:

Fig. 1 is a front elevational View of a cutter of my improvedconstruction and showing the same mounted for sliding movement upon acutter bar.

Fig. 2 is a horizontal section taken in a plane just above the top ofthe cutter bar.

Fig. 3 is a vertical cross section taken on the line 3-3 of Fig. 1.

Fig. 4 is a vertical cross section taken on the line 44 of Fig. 1.

Referring by numerals to the accompanying drawing which illustrates apreferred embodiment of my invention, I0 designates a cutter bar L w ofmetal I2 which may be several inches in length and formed in the upperand lower portions of said block are longitudinally disposed slots I3for the accommodation of those portions of the front Wall of the cutterbar II'I above and below the slot II.

Projecting into the tubular cutter bar from the intermediate portion ofblock I2 is a stud I4, on the rear portion of which is mounted forrotation a roller I5, the periphery of which bears against the underside of the top wall of the cutter bar, thus providing a rolling bearingthat maintains the cutter in proper upright position whiletravelinglongitudinally of the cutter bar.

Formed integral with the top of block I2 in front of the upper one ofthe slots I3 therein is an upwardly projecting plate It considerablyshorter than the block I2, and the upper end of this plate is increasedin length so as to form extensions I1 that occupy positions above theend portions of block I2.

Formed integral with the upper edges of the plate It and its extensionsI1 is a longitudinally disposed tubular member I8 that functions as ahandle for manipulating the cutter. Formed in the lower portions of theextensions I! are oppositely inclined slots I9 for the reception of thereinforced upper portions of cutters C. These cutters may be a standardform of safety razor bladesand which are readily obtainable in the openmarket.

Formed integral with and extending downwardly and outwardly from thelower edges of the extensions H to the sides of the slots I9 therein aresubstantially triangular plates 25 that overlie and provide guards forthe outer upper end portions of the cutting blades C.

Formed in the top of block I2 in front of the upper one of the slots I3therein is a slot or recess 2I for the accommodation of the lower innercorners of the cutters C. When the cutting blades are properlypositioned on the cutter, the lower inner corners of said cuttersproject downwardly past the plane occupied by the top of the cutter barI0, and the lower corners of said cutters terminate within the slot 2|.

The lower portion of plate I6 or that portion just above the block I2has its side portions made substantially wedge-shape in horizontalsection, with the apices thereof outwardly presented in order that saidplate will pass freely through the slits that are cut across the web ofpaper by the blades while the cutter is in use, thereby enabling thecutter to be moved lengthwise of the cutter bar with minimum resistanceoffered by the paper or material that is being cut.

In the use of my improved cutter, the same is positioned at one end ofthe cutter bar and the web of paper or other material to be cut is drawnforwardly from the supported roll of paper across the cutter bar untilthe desired amount of paper projects in front of said cutter bar. Thehandle I8 is now grasped by the operator and the: cutter is movedlengthwise upon the cutter bar and the forward one of the cutting bladeswill sever the Withdrawn portion of the paper along a line immediatelyin front of the cutter bar.

While not in use, the cutter occupies an outof-the-way position uponeither end of the cutter bar.

As the cutter moves lengthwise upon the cutter bar, the roller IE willride against the under surface of the top of the cutter bar, thusmaintain-- ing the cutter in proper upright position and materiallyreducing any friction resulting from the movement of the cutter andimmediately after the blade severs the paper, the edges along the lineof cut will engage against the inclined faces of the wedge-shapedportions of plate [5, thus affording minimum resistance to the travel ofthe cutter while the same is in use.

It is to be understood that the cutters C are readily removable from theslots l9 in the end portions I! of plate l6 so that when the cuttersbecome dull they may be quickly removed and replaced by sharp cutters.

Thus it will be seen that I have provided a roll paper cutter that isrelatively simple in construction, inexpensive of manufacture and veryeffective in performing the functions for which it is intended.

,It will be understood that minor changes in the size, form andconstruction of the various parts of my improved roll paper cutter, maybe made and substituted for those herein shown said block, a handle onthe upper portion of said plate and those portions of said plate betweenthe inner ends of said cutter being substantially wedge-shape in crosssection.

2. In a roll paper cutter, the combination with a tubular cutter barprovided with a longitudinally disposed slot, a block mounted forsliding movement on said cutter bar and having a portion that projectsthrough the slot therein, a plate projecting upwardly from the center ofsaid block, inclined cutters carried by the ends of said plate andpositioned above the end portions of said block, a handle on the upperportion of said plate and with oppositely arranged inclined faces formedon both sides of said plate above said block and between said cutters.

3. In a roll paper cutter, the combination with a tubular cutter barprovided with a longitudinally disposed slot, a block mounted forsliding movement on said cutter bar and having a portion that projectsthrough the slot therein, a plate projecting upwardly from the center ofsaid block, inclined cutters carried by the ends of said plate andpositioned above the end portions of said block, a handle on the upperportion of said plate, those portions of said plate between the innerends of said cutter being substantially wedge-shape in cross section anda roller journalled on that portion of the block that projects into saidcutter bar for engaging the inner face of one of the walls of saidcutter bar.

4. In a roll paper cutter, the combination with a tubular cutter barprovided with a longitudinally disposed slot, a block arranged forsliding movement on said cutter bar and having a portion projectingthrough the slot therein, antifriction means carried by that portion ofthe block that projects into the cutter bar, which anti-friction meansis adapted to engage the inner face of one of the walls of said cutterbar, a plate projecting upwardly from the center of said block, the sideportions of which plate immediately above the block are substantiallywedgeshape in horizontal section, extensions on the upper portion ofsaid plate and cutters removably mounted on said extensions.

5. In a roll paper cutter, the combination as set forth in claim 4 andwith a handle carried by the upper portion of said plate and saidextensions.

NEIL B. CURRIER.

